If the spleen is severely damaged and then removed, it will first have a great impact on the human digestive system, because the spleen is the second largest digestive system. If the spleen is not good, people will easily catch a cold and cause a series of complications. If the spleen is severely damaged and then removed, it will first have a great impact on the human digestive system, because the spleen is the second largest digestive system. If the spleen is not good, people will easily catch a cold and cause a series of complications. If the spleen is severely damaged and then removed, it will first have a great impact on the human digestive system, because the spleen is the second largest digestive system. If the spleen is not good, people will easily catch a cold and cause a series of complications. If the spleen is severely damaged and then removed, it will first have a great impact on the human digestive system, because the spleen is the second largest digestive system. If the spleen is not good, people will easily catch a cold and cause a series of complications. If the spleen is severely damaged and then removed, it will first have a great impact on the human digestive system, because the spleen is the second largest digestive system. If the spleen is not good, people will easily catch a cold and cause a series of complications.